Some common feed room signs may include:

1. Feed room - this simple sign indicates that the room is designated for storing animal feed
2. No unauthorised personnel allowed - this sign indicates that only authorised personnel are allowed in the feed room
3. Keep door closed at all times - this sign reminds individuals to keep the feed room door closed to prevent animals from accessing the feed and to maintain a controlled environment
4. Do not store or use pesticides in this room - this sign reminds individuals that pesticides should not be stored or used in the feed room to prevent contamination
5. Clean up spills immediately - this sign reminds individuals to clean up any spills immediately to prevent feed contamination
6. Do not feed animals in this room - this sign indicates that feeding animals in the feed room is prohibited, as it can lead to contamination and the spread of disease.
7. It's important for feed room signs to be clearly visible and easy to read, with concise and straightforward language. 

Additionally, it's a good idea to update the signs regularly to ensure that the rules and guidelines remain relevant and up-to-date with any changes in policies or regulations